Apache is a free and open-source cross-platform web server software.
CiviCRM is a web-based suite of internationalised open-source software for constituency relationship management.
Drupal is a free and open-source web content management framework.
Progressive Web Apps (PWAs) are web apps built and enhanced with modern APIs to deliver enhanced capabilities, reliability, and installability while reaching anyone, anywhere, on any device, all with a single codebase.
Stripe offers online payment processing for internet businesses as well as fraud prevention, invoicing and subscription management.